Safety protection system for transformer substation

Abstract

The invention discloses a safety protection system for a transformer substation. The safety protection system comprises a temperature sensor, an oxygen content sensor, an SF6 sensor, a smoke sensor, acontrol unit, a fan and a safety protection door lock; the safety protection door lock comprises an alarm indicating lamp, an intermediate relay ZJ, a locking electromagnet DSN, a bipolar power switch Q1, a door lock body, a fixed door handle, a key hole, a movable door handle, a movable door handle unlocking auxiliary contact JS and a movable door handle rotating disc; when a locking electromagnet DSN coil is powered off, the locking electromagnet DSN is released and locked to lock the door; and the circle center of the movable door handle rotating disc is fixedly connected with a rotating shaft of the movable door handle, the movable door handle rotating disc rotates along with the movable door handle, a movable door handle unlocking auxiliary contact JS is arranged at a missing part ofthe movable door handle rotating disc, and the movable door handle rotary table rotates along with the movable door handle to trigger the movable door handle unlocking auxiliary contact JS. Accordingto the safety protection system, locking and alarming functions of all room doors are realized, and outdoor workers are effectively prevented from entering rooms by mistake.

Description

technical field [0001] The invention relates to a safety protection system for a substation, belonging to the technical field of electric equipment. Background technique [0002] The temperature, oxygen content, SF6 gas content, smog, etc. in the substation need to be monitored in real time and the fan should be started to achieve ventilation. The traditional monitoring and alarm system has the following disadvantages: [0003] 1. Only warning lights and voice prompts are used at the monitoring and alarm device to warn personnel that the oxygen content is unqualified, SF6 gas exceeds the standard, etc., and personnel are not effectively stopped. [0004] 2. At present, only a monitoring and alarm system is installed outside a single door of the GIS room for prompting, and there is no prompting device for other doors leading to the GIS room. [0005] 3. There is no toxic gas and oxygen content monitoring system in the cable layer, battery room and other spaces, and personnel...

AI Technical Summary

Problems solved by technology

[0003] 1. Only warning lights and voice prompts at the monitoring and alarm device to warn personnel that the oxygen content is unqualified and SF6 gas exceeds the standard, etc., and personnel are not effectively stopped

[0004] 2. At present, only a monitoring and alarm system is installed outside a single door of the GIS room for prompting, and there is no prompting device for other doors leading to the GIS room

[0006] 4. When the indoor high-voltage power equipment has a ground fault, there is no alarm prompt and measures to prevent personnel from entering

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